Chair



FIG. 1 is a front elevational view of my new design for a chair;

FIG. 2 is a side elevational view of my new design for a chair, the opposite side view being a mirror image thereof;

FIG. 3 is a rear elevational view of my new design for a chair;

FIG. 4 is a top plan view of my new design for a chair;

FIG. 5 is a bottom plan view of my new design for a chair; and

FIG. 6 is a perspective view of my new design for a chair. 

The ornamental design for a chair, as shown and described. 